/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.beam.sdk.nexmark.sources.generator.model;

import java.util.Random;

/** LongGenerator. */
public class LongGenerator {

  /** Return a random long from {@code [0, n)}. */
  public static long nextLong(Random random, long n) {
    if (n < Integer.MAX_VALUE) {
      return random.nextInt((int) n);
    } else {
      // WARNING: Very skewed distribution! Bad!
      return Math.abs(random.nextLong() % n);
    }
  }
}
